Best way to insulate a CMU wall



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    Brendan Clifford

    Is a loose filled cmu wall more effective then a solid fill because it allows for air space which allows for a better R value? Also would a loose filled wall have a higher R value then no fill which would have a higher r value then solid fill?

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    Michael Ermann

    Foams are best, followed by puffy rocks (perlite and vermiculite), followed by air….solid has the lowest R Value

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